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Release Notes for Bitcoin Unlimited Cash Edition 1.3.0.0

Bitcoin Unlimited Cash Edition version 1.3.0.0 is now available from:

https://bitcoinunlimited.info/download

Please report bugs using the issue tracker at github:

https://github.com/BitcoinUnlimited/BitcoinUnlimited/issues

This is a major release version based of Bitcoin Unlimited compatible with the Bitcoin Cash specifications you could find here:

https://github.com/bitcoincashorg/spec/blob/master/uahf-technical-spec.md (Aug 1st Protocol Upgrade, bucash 1.1.0.0) https://github.com/bitcoincashorg/spec/blob/master/nov-13-hardfork-spec.md (Nov 13th Protocol Upgrade, bucash 1.1.2.0) https://github.com/bitcoincashorg/spec/blob/master/may-2018-hardfork.md (May 15th Protocol Upgrade, bucash 1.3.0.0)

Upgrading

If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).

If you are upgrading from a release older than 1.1.2.0, your UTXO database will be converted to a new format. This step could take a variable amount of time that will depend on the performance of the hardware you are using.

Downgrade

In case you decide to downgrade from BUcash 1.2.0.1, or greater, to a version older than 1.1.2.0 will need to run the old release using -reindex option so that the UTXO will be rebuild using the previous format. Mind you that downgrading to version lower than 1.1.2.0 you will be split from the rest of the network that are following the rules activated Nov 13th 2017 protocol upgrade.

Main Changes

  • May 15th 2018 protocol upgrade, at the median time past (MTP) time of 1526400000 (Tue May 15 16:00:00 UTC, 2018) this new features will introduced:
    • OP_RETURN data carrier size increases to 220 bytes
    • Increase the maximum blocksize (EB) to 32,000,000 bytes
    • Re-activate the following opcodes: OP_CAT, OP_AND, OP_OR, OP_XOR, OP_DIV, OP_MOD
    • Activate these new opcodes: OP_SPLIT to replace OP_SUBSTR, OP_NUM2BIN, OP_BIN2NUM
  • New RPC command listtransactionsfrom
  • Add new OP_DATASIGVERIFY (currently disabled)
  • Increase LevelDB performance on Linux 32 bit machine (port from Core)
  • QA enhancements (port from Core)
  • Improve XTHIN machinery by the use of shared txn
  • Greatly improve initial blocks download (IBD) performances
  • Automatically determine a more optimal -dbcache setting if none provided
  • Improve Request Manager functionalities

Commit details

  • aba7387a3 Fix several tests in script_tests.json (Shammah Chancellor)
  • 9e4d451be fix for #1035: blocknotify (#1037) (ptschip)
  • d8bf8c422 add cumulative chain work to 'getchaintips' (gandrewstone)
  • a51fd31d1 Move requester.sendrequests() to just before the place where we sleep. (ptschip)
  • 8e68a25e1 Check blocks and headers explicitly against the checkpoint hash (#1030) (gandrewstone)
  • 2f61f0964 Update copyright date on all file under src/ (sickpig)
  • 013f64db7 add listtransactionsfrom to the args conversion list (#1031) (gandrewstone)
  • 6170b0558 Update wget dependency in native Windows build env setup script (Justaphf)
  • b73e9564e Bump version to 1.3.0.0 (sickpig)
  • dee4bfbd7 rely exclusively on the request manager for managing txn requests (#1017) (ptschip)
  • f84e54d89 use cs_objDownloader to lock mapBlocksInFlight (#1022) (ptschip)
  • d45cc2381 add changed implementation to spec (gandrewstone)
  • 4bf1a8928 switch signature type byte to the end of the pushed signature. Add additional tests and check exact test return codes. (gandrewstone)
  • f5b105420 add listtransactionsfrom RPC call that behaves like listtransactions probably should have originally ('from' index 0 is the oldest transaction) (gandrewstone)
  • eccd0d7ed Initilize counter to a random value. (sickpig)
  • cc1028de7 Prevent the premature adjustment of the coins cache size (ptschip)
  • 6ebc73ec5 remove duplicate fork activation logic (gandrewstone)
  • f00aeeced Make both May fork tests have similar names to avoid confusion. (ptschip)
  • b4d386bde Move activation for EB, MG and data carrier size to UpdateTip (ptschip)
  • 7648f0bb7 Use may152018 rather than monolith to describe files and variables (ptschip)
  • 1ff2cf290 Fix branding in developer doc (ptschip)
  • 43a60fe88 remove unnecessary print statement from python test (ptschip)
  • a769ca2d2 Fix abc-monolith-acitivation.py test failures (ptschip)
  • 5f4d34c3c Set Monolith opcode enable script flag if monolith enabled (Daniel Connolly)
  • 0facaf79e Add support for DIV and MOD opcodes (Jason B. Cox)
  • 5136489ff Add support for SPLIT opcodes (joshuayabut)
  • a5d9cdcb4 Add support for CAT (joshuayabut)
  • e3750749c Refactored existing monolith_opcodes tests (Jason B. Cox)
  • 52d4e1088 Implement support for NUM2BIN (deadalnix)
  • 65d5d58d1 Refactor opcode test to reduce redundancy (deadalnix)
  • 49d96caee Add support for BIN2NUM opcode (deadalnix)
  • 54db51bc1 Simplify IsOpcodeDisabled (deadalnix)
  • ee18fa742 Add support for AND, OR and XOR opcodes (deadalnix)
  • f60a14bc3 Refactor MinimalizeBigEndianArray t be part of CScriptNum (deadalnix)
  • f74611198 Ensure that CScriptNum is self contained. (deadalnix)
  • 91f92cf0e Add function to trim leading array zeros maintaining MSB. (Jason B. Cox)
  • 15b1bd10a Pull minimal check out of CScriptNum constr. into IsMinimalArray (Shammah Chancellor)
  • 33fe10340 Add helper function for disabled opcodes (Shammah Chancellor)
  • ccc1ffba7 Cleanup scriptflags in unit tests (ptschip)
  • 4171184b3 Add a flag to gate opcodes activation for the new HF (deadalnix)
  • ce1472782 Explode disabled opcode if into a switch (deadalnix)
  • c7b05822e Add missing test cases in script_tests.cpp (deadalnix)
  • 143bab69a Prepare for re-enabled opcodes for the May 2018 protocol upgrade (Daniel Connolly)
  • 1a9c9cc6d Fix bug in ClearOphanCache() (ptschip)
  • a281657b5 Use CBlockRef in other places (ptschip)
  • 24c8b0395 Use p for pointer notation to signify these are shared pointers to blocks (ptschip)
  • be573930d Introduce CBlockRef typedef and MakeBlockRef() and use them. (ptschip)
  • 22b59f60d add -conf path before launching bitcoind (Samuel Kwok)
  • eb2d3a661 control which config params add to bitcoin.conf (Samuel Kwok)
  • 3d674c084 switch from LogPrint to LOG message (ptschip)
  • 190a3442d Increase LevelDB max_open_files unless on 32-bit Unix. (Evan Klitzke)
  • d99f72021 In unlimited.cpp reference mapOrphanTransations by the orphanpool singeton (ptschip)
  • efae8487a Update the calculation of maxAllowedSize to reflect shared pointer use (ptschip)
  • 2bc6211b9 Add the size of the shared txn pointers to the orphanpool size (ptschip)
  • 8507ded63 Make unit tests work with the new orphan pool singleton (ptschip)
  • 7ff80f653 Add comments to orphanpool.h (ptschip)
  • ea8ae51a9 Use emplace for inserting elements into the orphan pool (ptschip)
  • cedff4dc5 Move orphan functions out of main.cpp (ptschip)
  • 8b659d6e5 Use shared pointers in the orphan cache (ptschip)
  • afe8c8f8e Lower the maximum size a thinblock can be before we stop processing. (ptschip)
  • ec32856d1 Use CTransactionRef in mapMissingTx for xthins (ptschip)
  • f85091585 Start using CTransactionRef when reconstructing an XTHIN (ptschip)
  • 9b3c684a0 Fix GetTransaction() (ptschip)
  • c3be5619b Introduce convenience type CTransactionRef (sipa)
  • 767dbb083 Make CBlock::vtx a vector of shared_ptr (sipa)
  • bb1002382 Add deserializing constructors to CTransaction and CMutableTransaction (sipa)
  • b8a86d887 Add serialization for unique_ptr and shared_ptr (sipa)
  • 4ae8089fb Move mapBlocksInflight to the request manager (ptschip)
  • 42d7d43d7 If a node disconnects then reset lastrequesttime for any blocks in flight (ptschip)
  • 8745a932c Use C++11 range based loops and nullptr's (ptschip)
  • cb86320af Use emplace for inserting a new blockvalidationthread entry (ptschip)
  • 8ec03a48e Remove references to requester singleton in RequestManager.cpp (ptschip)
  • 2c6eab70e Enforce the use of Qt5 at configure script level (sickpig)
  • da27ab3ea Append CLIENT_VERSION_BUILD to Apple's CFBundleGetInfoString (sickpig)
  • 9dd8b90dc Properly set up VERSION var for the win installer (sickpig)
  • 62ea24cf7 Add CLIENT_VERSION_BUILD to AC_INIT (sickpig)
  • 75df382d6 add enable/disable to datasigverify and count sigops. (gandrewstone)
  • f5e8c0045 Clear warn in QT and getinfo if initial conditions is not valid anymore (#993) (sickpig)
  • 330553f4a Partial port of XT PR #319 from dagurval/qa-cherries (dgenr8)
  • 442805625 Port XT #315 from dagurval/28-01-httpserver (dgenr8)
  • ba3423edf Port Core #8166: src/test: Do not shadow local variables (laanwj)
  • edeb49eab Ccorrect human-readable fork time in comment (dgenr8)
  • 8992e345f Port Core #7888: prevector: fix 2 bugs in currently unreached code paths (laanwj)
  • 3d6b95491 Kill insecure_random and associated global state (laanwj)
  • b2ee649e7 fPreferHeaders should be false when initialized (ptschip)
  • d855c2883 Remove parameter nodeid from InitializeNode() (ptschip)
  • 4b9598788 Add a couple of DbgAsserts for if state is NULL (ptschip)
  • 849ef6163 Switch from fSyncStartTime to nSyncStartTime (ptschip)
  • 26942665c Use a proper constructor for CNodeState (ptschip)
  • ef79dea10 Switch from pnode to nId (ptschip)
  • 28e4929f4 Initialize all variables for CNodeState (ptschip)
  • 924c27a8b Update May 15, 2018 fork activation time as per spec draft (#987) (sickpig)
  • 829437ee5 Allow -rpcconnect in bitoin.conf, Fixes #990 (ptschip)
  • d8aecc78a Fix compiler warning on uint64_t to int comparison (ptschip)
  • 954ae6b40 [consensus] Pin P2SH activation to block 173805 on mainnet (John Newbery)
  • a43d77ab3 Update chainparams for regest so that BIP34 is activated (ptschip)
  • b407feb88 Consensus: Remove ISM (NicolasDorier)
  • b1853eb6d Pull script verify flags calculation out of ConnectBlock (Matt Corallo)
  • 22192741f Move checking of blockdownload timeout to the request manager (ptschip)
  • f7f227e72 Fix for rollbackchain() (#994) (ptschip)
  • 52238c64a Remove dead code related to SizeForkExpiration consensus parameter (sickpig)
  • c1f201405 clean up accepnonstdtxn flag by removing redundant global and making chainparams API correct (gandrewstone)
  • f7cb6ffbb [IBD patch 4] Deprioritise slower downloaders (#970) (ptschip)
  • dbe128827 add OP_RETURN to list of imported opcodes since we use it (#985) (gandrewstone)
  • 715aabfc1 Automatically determine a more optimal -dbcache setting if none provided (#948) (ptschip)
  • e9c49ff65 sync: Remove superfluous assert(..) (Awemany)
  • a48397293 update datasigverify as per feedback (gandrewstone)
  • ccd8e889f move spec to be standalone rather than a pull request in the re-enable op_codes spec (gandrewstone)
  • 0aa71ea70 Update QT build instructions (ptschip)
  • 3bf63aece fix copyright date, and remove inapplicable comment (gandrewstone)
  • 77969c13d Use references in range based for loops (ptschip)
  • 3b0359633 Make sure lock on cs_main isn't held before aquiring semaphore grant (sickpig)
  • b88136e25 Add ability to assert a lock is not held in DEBUG_LOCKORDER (Matt Corallo)
  • 0ba50e39d Use C++11 nullptr keyword rather than NULL macro (sickpig)
  • b21911c74 Remove using namespace std from thinblock.cpp (sickpig)
  • 24b645189 Substitute BOOST_FOREACH with c++11 range-based for loop (sickpig)
  • 11852363b Fix comments for some xthin stat gathering methods (sickpig)
  • b11e9d7e4 remove unnecessary arg (gandrewstone)
  • 925ced865 add ability to specify different binary files/directories for each client (gandrewstone)
  • 6e8564a87 basic may 2018 fork infrastructure (gandrewstone)
  • 6ffb81e6b ensure that the subversion and miner coinbase is updated when EB or AD is updated (gandrewstone)
  • f12ccf059 Use Logging namespace to access LogAcceptCategory (sickpig)
  • a1d26e83e Add a few ui messages to startup when opening databases (ptschip)
  • c4db28f24 Makefile.am: Typo fix that broke make clean rule (awemany)
  • 1bf53307c OP_DATASIGVERIFY reference implementation (gandrewstone)
  • b39dd57ed Remove the redundantblocksize argument from HandBlockMessage (ptschip)
  • 9c4414d20 Use GetBlockSize() in place of ::GetSerializedSize (ptschip)
  • 0394fc695 Create block method GetBlockSize() (ptschip)
  • a28ee85d3 Scripts to help automate first-time setup of the mingw dev environment on Windows. (#85) (Justaphf)
  • fe425dc63 Explicitly mark fall-through cases (sickpig)
  • dcf43cf9d change to pointer type (ptschip)
  • c08e038d5 convert CBlock to a shared pointer to limit copying of a block (gandrewstone)
  • e8e1d02e8 Fix warnings on ReadOrderPos and WriteOrderPos (sickpig)
  • b3ca26c44 Only run data gathering code if BENCH logging is enabled. (ptschip)
  • 9d38d55c8 Change log message from LogPrintf to LOG(NET, ... (ptschip)
  • 7e6db6810 net: initialize socket to avoid closing random fd's (theuni)
  • 466d14aef If there is nothing to trim then do not continue (ptschip)
  • c2f41c97d Prevent potential integer underflow of nTrimHeight (ptschip)
  • 49243d0be Replace BOOST_FOREACH and NULL, in SendMessages, with C++11 notation (ptschip)
  • 4164aa386 Remove duplicate section of code (ptschip)
  • c0f806f4b change mempool to use a non-recursive shared lock (gandrewstone)

Credits

Thanks to everyone who directly contributed to this release:

  • Andrea Suisani
  • Andrew Stone
  • awemany
  • Justaphf
  • Peter Tschipper
  • Samuel Kwok
  • Tom Harding

We have backported an amount of changes from other projects, namely Bitcoin Core, Bitcoin ABC and Bitcoin XT.

Following all the indirect contributors whose work has been imported via the above backports:

  • Amaury Séchet
  • Wladimir J. van der Laan
  • Shammah Chancellor
  • Matt Corallo
  • NicolasDorier
  • Cory Fields
  • Daniel Connolly
  • Evan Klitzke
  • Jason B. Cox
  • John Newbery
  • joshuayabut
  • Pieter Wuille